# Ch 8: Linear Functions

Use these video lessons and quizzes to help you understand slopes, y-intercepts, and point-slope formula. Learn how to solve linear inequalities and systems of linear equations using inverses, graphs, and substitution techniques.

## Linear Functions - Chapter Summary

Begin your study of linear functions by learning the slope-intercept form of a linear equation. You can also find out how to use standard form to find intercepts, determine the slope of a line, and differentiate between zero slope and undefined slope.

As you progress through the lessons, instructors show you how to write a linear equation using the point-slope formula or parallel and perpendicular lines' opposite reciprocal. Instructors can also teach you how to compare and contrast two or more linear equations by finding the intersection point on a graph or using the substitution and linear combination methods. You can also learn how to convert systems of equations into matrices and solve equations including linear inequalities.

The chapter concludes with several lessons containing practice questions and examples to show you how these concepts are used to solve real-life problems. Altogether, this chapter is designed to introduce you to the following main topics:

• Slope-intercept and standard form
• Point-slope formula
• Graphing and substitution techniques
• Linear combinations
• Systems of equations
• Linear inequalities

Our experienced instructors make the lesson content approachable and engaging. You can access the video lessons as many times as you'd like in whichever order you need. Use them to review steps in the problem solving process or enhance your understanding of key concepts. When you're ready, there are corresponding self-assessment quizzes you can take to get extra practice solving linear equations.

15 Lessons in Chapter 8: Linear Functions
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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### Other Chapters

Other chapters within the TExES Mathematics 7-12 (235): Practice & Study Guide course

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